... 干涉仪两臂物理长度差（△L-Ls．LR） 平行于磁场方向磁致伸缩材料的长度 信号臂（或传感臂SignalAnn） 参考臂（Reference Arm） 压电陶瓷（piezo-electdc transducer）b厶址k弘队唧k 光源相干长度 单模光纤纤芯折射率 干涉仪两臂的光强 最s平均值 - 干涉仪两...
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激光器发出的光通过光环行器，被光纤耦合器分成样品臂和参考臂。
Light from the laser goes through the optical circulator, and is divided into the sample and reference arm by the fiber coupler.
外差探测用来探测传感臂和参考臂由于温度变化引起的输出信号的频率差异。
The heterodyne detection is used to detect the output signal frequency difference between the reference arm and sensing arm, which is caused by the temperature variation.
所得结果与实测值较相吻合，可为伸缩臂的设计提供有价值的参考。
The obtained results accord with the measured values, which can provide valuable reference for the design of telescopic arms.
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